ASTROSAT CZTI

Data Quality Report

Orbit 27313

Creation date: 2024-06-27T19:38:46.154459
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_255T01_9000003922_27313cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27313cztM0_level2_quad_clean.evt
Size (bytes)531,423,360114,039,360
Size506.8 MB 108.8 MB
Events in quadrant A3,372,121797,913
Events in quadrant B4,811,023773,051
Events in quadrant C3,324,452737,341
Events in quadrant D4,182,085728,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140060
B0184660
C0137760
D0163640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968881.474531%
B59694747.941029%
C59691262.110906%
D59692664.456358%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7263 5969 1 1 0.01% 0.02%
B 7264 5969 326 326 4.49% 5.46%
C 7264 5969 0 0 0.00% 0.00%
D 7264 5969 186 186 2.56% 3.12%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 248 21322 119.05 868 857 171.9
A 13 254 9933 52.8 868 857 171.9
A 0 226 7699 39.8 868 857 171.9
B 10 245 1524167 9677.06 832 814 157.4
B 0 190 22012 134.66 832 814 157.4
B 12 111 17895 108.51 832 814 157.4
C 14 238 131025 701.89 799 805 185.5
C 2 16 70525 375.79 799 805 185.5
C 15 208 10920 54.52 799 805 185.5
D 1 52 854846 4144.03 812 796 206.1
D 2 250 194814 941.42 812 796 206.1
D 12 233 41280 196.44 812 796 206.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter